Report Opex Sabc-hpgr Rev c

7/23/2019 Report Opex Sabc-hpgr Rev c

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TECHNICAL REPORT

Nº M40040-REPO-GA-002

BARRIC .AL/VAR

PRO1ECT Nº M40040

.AL/VAR /EEP SLPHI/ES

SCOPING ST/3



TABLE OF CONTENTS

PAGE

&.% E/EC0T"1E 20MMA3................................................................................................................

'.% "4T5D0CT"54............................................................................................................................

$.% 2C5PE...........................................................................................................................................

.% 5PT"54 DE2C"PT"54..................................................................................................................& 2A! !rinding......................................................................................................................' 6P!.................................................................................................................................

7.% E1AL0AT"54 A2"2......................................................................................................................7.& P5D0CT"54 PLA4.........................................................................................................7.' LA5...............................................................................................................................7.$ ELECT"C P58E.........................................................................................................7. C5420MALE2..............................................................................................................7.7 MA"4TE4A4CE...............................................................................................................

*.% E20LT2 59 E2T"MAT"54 59 5PEAT"4! C52T2................................................................*.& 5PE/ C52T PE "TEM..................................................................................................*.' P58E C5420MPT"54................................................................................................

:.% E1AL0AT"54................................................................................................................................

+.% EMA;2....................................................................................................................................



$0 EXECTIVE SMMAR3

Tis docu,ent evaluates te di==erential operating cost =or t#o co,,inutiontecnologies =or te scoping study o= te FGaldHvar Deep 2ulpides Project < Co,paIHaMinera GaldHvar (CMG). Te ai, is to obtain te sa,e ?uality siKing and trougputrates to =eed te =lotation plant.

ot options receive ,aterial =ro, a coarse ore stocpile o= :7%%% tonnes #it

stocpiled ore processed troug a pri,ary cruser.

Te battery li,its =or te evaluation are =ro, te discarge o= te coarse ore stocpileto te =inal ground ,aterial =ed to te =lotation plant #it a P+% o= '&% ,.

Te =irst option (also re=erred to as base case) consists o= a 2A! circuit #it pebblecrusing in closed circuit =ollo#ed by conventional ,illing (ball ,ills) in closed circuit#it ydrocyclones.

Te second option consists o= a crusing circuit including secondary crusing (conecrusers) and tertiary crusing (6P!) and te necessary ancillary e?uip,ent o= screens and conveyor belts =ollo#ed by conventional ,illing (ball ,ills) in closedcircuit #it ydrocyclones.

Te di==erential operational e>penditure (5PE/) is obtained as te di==erence bet#een



2$0 INTRO/CTION

Co,paIia Minera GaldHvar (CMG) as contracted AMEC to per=or, a scoping study =or ne# =acilities treating sulpide ore at te GaldHvar ,ine allo#ing continuity to te actualoperation o= o>ide ,ineral.

CMG is in te transition stage bet#een te actual o>ide ,ineral operation troug atraditional ydro,etallurgical process and sulpide resources treat,ent troug

concentration tat considers crusing grinding =lotation and tailings ticening. Teconcentrate is =iltered and #ill be =ollo#ed by a =urter treat,ent o= te sulpideconcentrate #it te ai, o= obtaining =inal ,etal as saleable product. Te sulpide,ineral resources are esti,ated at &%*$ ,illion tonnes.



8$0 SCOPE

Tis report corresponds to te 5pe> 2tudy FTecnological 5ptions o= Crusing and!rinding tat considers te evaluation o= t#o circuit con=igurations incorporatingdi==erent tecnologies =or a trougput o= :7%%% tpd (pase ") =ollo#ed by anoter o= &7%%%% tpd (pase "" *t year on#ards). Te deno,ination o= te options is-

• 5ption & - 2AC

• 5ption ' - 6P!

•

Tis study de=ines te necessary =acilities =or tese t#o circuit con=igurations includingcrusing and grinding #it its principal e?uip,ent (pri,ary crusing is e>cluded).

9or te econo,ic evaluation te di==erential operating cost (5PE/) #as developed =or eac option.



4$0 OPTION /ESCRIPTION

To acieve te objective o= tis study te base o= co,parison o= te t#o con=igurationsis to treat a =eed trougput during '$ years o= use=ul li=e in t#o pases- Pase " up to:7%%% tpd during years & to 7 and Pase "" &7%%%% tpd =ro, year * on#ards.

4$ SAG Grin'in9

Tis option reclai,s ore =ro, te coarse stocpile =eeding t#o identical parallelgrinding lines (Pase " @ "").

Eac grinding line #ill consist o= a 2A! ,ill (&) o= % > '' (''.7 M8) t#o (') pebblesscreens o= &> '+ (&&% 8) one operating and one stand by t#o (') cone cruserso= :7% 8 eac =or pebbles crusing and t#o (') ball ,ills o= '>% (&7.7 M8 per unit) eac operating in a reverse closed circuit #it a ydrocyclone cluster o= &$N'units o= $% o= dia,eter.

Table <& so#s te list =or te ,ain e?uip,ent considered =or tis option.

Ta5e 4-26 Main E:(i&;ent Li)t SAG O&tion$



4$2 HPGR

Tis option reclai,s ore =ro, te coarse stocpile to =eed tree crusing lines per pase (Pase " @ "") eac pase consisting o= a secondary crusing in closed circuit=or,ed by tree ($) double dec dry screens o= &> '+ (:7 8 eac) and =our ()cone crusers o= $' 8 $ operating and & stand by. 9ollo#ing te secondary crusing circuit tere is a tertiary crusing circuit consisting o=

si> (*) single #et screens o= &' > '+ (77 8 eac) and tree ($) 6P!s o= '.D >&.*78 (7.7 M8 eac) per eac pase o= te project.

9or eac 6P! tere #ill be one dry screen one secondary cruser and t#o #etscreens. 9or every t#o #et screens tere #ill be one (&) ball ,ill o= ''>$7 (.+ M8per unit) eac one operating in a reverse closed circuit #it an ydrocyclone cluster o= &$ units o= $$ o= dia,eter.

Table <' so#s te list =or te ,ain e?uip,ent considered =or tis option.





<$0 EVALATION BASIS

Tis capter presents te evaluation basis =or te concentrator plant.

<$ PRO/CTION PLAN

Te ,ining plan is presented in anne> A and contains te in=or,ation o= te ore to betreated during te use=ul li=e o= te project. Te no,inal trougput o= te plant is :7

tpd e?uivalent to '7&+7 tBy o= ore =or =irst =ive years (Pase ") and ten increased to&7% tpd =ro, year * (Pase "") e?uivalent to 7%$:% tBy o= ore.

<$2 LABOR

Table 7<& @ 7<' so#s te increased #or=orce =ro, one pase to anoter and telabour cost respectively. Table 7<$ so#s te di==erential costs per year bet#een bottecnologies.

Ta5e <-46 O&eratin9 an' Maintenan+e$



<$8 ELECTRIC PO>ER

9or eac con=iguration te po#er consu,ption #as calculated =or no,inal conditionsconsidering po#er =actors =or all te plant used in Cerro Casale Project Pre<9easibility@ 9easibility 2tudy TADE 599 2T0D3 EP5T 4O &7:'<4<E<$%'<ev %according to table <& @ <'. Te speci=ic po#er consu,ption (2PC) #as calculated in8Bt ore adding all te crusers and ,illing units per con=iguration.

Ta5e <-?6 S&e+i*i+ Ener9@ Con)(;&tion$Pase " Pase ""

2AC 6P! 2AC 6P!

2PC 8Bt ore &+.* &*. &+.* &*.

Te po#er costs #ere calculated using a unit price o= &%% 02BM8.

<$4 CONSMABLES

Te speci=ic consu,ption o= consu,ables @ unit prices considered are in te =ollo#ingtable-



Liners and grinding ,edia consu,ption #ere calculated =ro, #ear rates used in Trade<5== 2tudy eport 4O &7:'<4<E<'%$ ev % F6P! vs. 2A! Pre<=easibility @9easibility studies =or te Cerro Casale Project.

<$< MAINTENANCE

Maintenance ,aterials #ere esti,ated as $ (2AC) and (6P!) o= te

,ecanical capital costs ranging =ro, ore reclai, to grindingB,illingBclassi=icationoperation described in report M%%%<E2T"<!E<%%$ FCAP"TAL C52T Appendi> A. A&% contingency as been added to te ,aintenance costs to cover operating,aterials.

Ta5e <-6 Maintenan+e Co)t)

"te, Maintenance

Costs

2AC 6P!

P6A2E " ;02By :$7 ++%%



=$0 RESLTS OF ESTIMATION OF OPERATING COSTS

Tis capter presents te 5PE/ results =or te areas studied.

=$ OPEX COST PER ITEM

Te 5pe> co,parison =or te areas in study distributed per cost ite, is presented intables *<& @ *<' =or ,ore details see anne> A. "n table *<$ te di==erential costsbet#een bot tecnologies are presented.

Ta5e =-06 O&e7 Co;&ari)on in SD@ SDt &er +o)t ite;$

Ta5e =-6 O&e7 La5o(r Poer Con)(;a5e) Materia) Ot"er) in SD@ SDt &er +o)t



Ta5e =-26 /i**erentia Co)t)$

Te 5pe> cost distribution so#s a si,ilar structure =or bot options. Total operatingcost is '' iger =or te 2AC option =or bot pases.

Labour cost is and + greater in 6P! tan in 2A! option =or pase " @ ""respectively because tere is ,ore e?uip,ent in operation and ,aintenance (seecapter ).

2AC po#er cost is &% greater tan 6P! option =or bot pases.

Consu,ables costs are 7* greater =or 2AC option =or bot pases



?$0 EVALATION

A su,,ary o= te di==erential operating cost evaluation is so#n in te =ollo#ing table

Ta5e ?-46 Tota /i**erentia +o)t &er ite;$

2AC tecnology is %.:% 02Bt ,ore e>pensive tan 6P! option to treat :7%%% and&7%%%% tpd.



$0 REMARS

• 5ption & 5PE/ is &:*%+ ;02By ,ore e>pensive =or pase " and $7&

;02By =or pase "".

• 5ption & 5PE/ is %.:% 02Bt ore ,ore =or bot pases.

• Labour cost is and + greater in 6P! tan in 2A! option =or pase " @ ""

respectively.

• 2AC po#er cost is &% greater tan 6P! option =or bot pases.

• Consu,ables costs are 7* greater =or 2AC option =or bot pases.

• Maintenance costs are '% greater =or 6P! option =or bot pases.

• Total 5perating cost is '' iger =or te 2AC option =or bot pases.



A44E/ A

5PE/ DATA



2AC 5PE/ DATA

6P! 5PE/ DATA

M%%% '+*$:.doc PA!E &:



M%%% '+*$:.doc PA!E &+

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Report Opex Sabc-hpgr Rev c